etherdelta is using metamask wallet.
so you need to withdraw from etherdelta contract to your metamask wallet.
from metamask wallet, you can transfer to bittrex.
Is there any possibility to directly transfer from Etherdelta to Bittrex.Why should i want to use metamask? .I saw it in the top of MEW wallet .But i don't know about it.
You can use the transfer tab and send it directly to your bittrex ethereum deposit address, but you have to withdraw the fund first using the withdraw tab. Just make sure the address is correct before you send the eth because you can't do anything if you send it to the wrong address.